4a. Length of mesial margin of the palm greater than width of palm (sometimes about equal on females).....................................go to 54b. Length of mesial margin of palm less than width of palm....go to 9

5a. Claw tubercles reddish or orangish..................................go to 65b. Claw tubercles not reddish or orangish............................go to 7

7a. Carapace with two discrete spots on each side..........................................................Procambarus seminolae7b. Carapace without discrete spots (occasionally, P. enoplosternum will have spots, but there is usually dark pigment connecting them)....................................................................................go to 8

8a. Areola wide, averaging 3.6 times as long as broad................................................Procambarus enoplosternum8b. Areola narrow, averaging 11 times as long as broad................................................................Procambarus acutus

11a. Mesial margin of palm with more than two rows of tubercles.............................................................................go to 1211b. Mesial margin of palm with two rows of tubercles.........go to 13

13a. Areola usually more than 9 times as long as broad and often obliterated (Fig. 5A); rostrum typically somewhat blunt; some populations with distinct abdominal stripes; cervical spines never present............................................................Cambarus striatus13b. Areola usually less than 9 times as long as broad (Fig. 5B); rostrum tapering; some individuals with indistinct abdominal stripes; cervical spines sometimes present, especially in juveniles.............................................................Cambarus latimanus